** Phone and broadband provider TalkTalk falls 3.8pct after Exane double-downgrades to "underperform" from"outperform"
** Broker says threat of competition from Sky andVodafone likely to see TalkTalk suffer
** Says co likely to just hit FY17 guidance but consensus istoo optimistic
** Fourth top faller on FTSE 250 index


(Alliance News) - The following are the leading risers and fallers among FTSE 100 and 250 index constituents on Wednesday.


(Alliance News) - Stock prices in London opened slightly lower on Wednesday as investors digested UK inflation data, while attention turned to the Fed...


* Vodafone CEO says EU needs new merger guidelines fast